Device for applying plaster to bandages



April 26, 1932. BUCHSTEIN 1,855,905

DEVICE FOR APPLYING PLASTER T0 BANDAGES Filed June 25, 1930 3Sheets-Sheet l Fig. 1

Ferd 'mmxd Emchsmin gang Filed June 23, 1950 3 Sheets-Sheet 2 gwuvntoz sFerdinand Iguclxscczin (lam M1 8 April 26, 1932. FJBUCHSTEIN DEVICE FORAPPLYING PLASTER TO BANDAGES Filed June 23, 1930 3 SheetsSheet fa aFerdinand Buchscain Patented Apr. 26, 1932 FERDINAND BUOHSTEIN, OFMINNEAPOLIS, MINNESOTA DEVICE FOR APPLYING PLASTER T BANDAGESApplication filed June 23,

My invention relates to improvements in devices for preparing bandagesparticularly for use in the formation of casts in orthopedic practices.

a, In the correction or prevention of deformities in persons, it isoften necessary to construct a cast about the body or limb of a patient,the cast to be left in place for the purpose of reinforcing or bracingthe deformed 1 or injured member or to be split and removed for thepurpose of forming a mold from which a counterpart of the deformed orinjured member may be made. In instances such as the latter, thecounterparts are often employed as models in the construction of bracesand the like for the injured members.

Usually the casts are formed by winding, turn upon turn, about the trunkor other portion of the patients body a bandage moistened in the rolland which has been impregnated with plaster of Paris. In the process ofwinding a moistened bandage thus treated with plaster, the turns orlayers thereof become rapidly set one upon the other, thus forming asolid shell-like structure.

The bandages are commonly prepared, as occasion requlres, by filling orimpregnating bandaging material with plaster of Paris as by manuallysifting and spreading the plaster upon the material as it is taken froma roll and rewound. This manual process is slow, laborious and extremelyunsatisfactory from the standpoint of cleanliness.

A substantial working space is occupied in carrying out the manualprocess and the plaster is seldom applied to the bandaging materialuniformly.

An object of my invention is to provide a simple, durable, compact andinexpensive device by means of which a user may quickly and easily causethe uniform application of plaster to bandaging material in an effectiveand eflicient manner and without the usual disadvantage present in themanual method.

Another object of the invention resides in providing a device in whichthe bandage is thoroughly and uniformly impregnated with plaster.

Another object of the invention resides in providing a device in whichthe plaster is 1930. Serial No. 463,310.

applied to the bandage and the bandage simultaneously formed into aroll.

A still further object resides in providing a support over which thebandage is drawn, and in further providing a sifting drum for 5:;sifting the plaster upon the bandage during its travel over saidsupport.

A feature of the invention resides in incor poratmg in said support aflexible apron, and in providing a spindle on which the bandage isrolled superimposing said apron.

Another object of the invention resides in providing a roller forworking the sifted plaster into the bandage.

An object of the invention resides in providing means for urging saidapron toward the roller to press the bandage against the same.

Another feature of the invention resides in supporting the apron so thatit will bear against the lower portion of the accumulating roll oftreated bandaging material.

A still further object resides in mounting the apron to enable it tocompensate for the increase in the diameter of the roll of bandage asthe same is wound upon the spindle.

A feature of the invention resides in providing a tensioning device fortensioning said apron and thus maintaining the same taut and in contactwith the roll of bandage as it winds upon said spindle.

An object of the invention resides in providing the sifting drum withblanking bands for regulating the area over which the plaster isdistributed.

Another object resides in forming the support for the bandage with a bedportion and in mounting "thereon adjustable guiding means foraccommodating bandages of dif-' ferent widths.

Other objects of the invention reside in the novel combination andarrangement of parts and in the details of construction hereinafterillustrated and/or described.

In the drawings:

Fig. 1 is a side elevational View of an embodiment of my invention indevices for applying plaster to bandages.

Fig. 2 is a plan view of the structure shown in Fig. 1, portions thereofbeing cut away to disclose parts of the construction otherwiseconcealed.

Fig. 3 is a longitudinal sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a fragmentary elevational view in detail illustrating thecrank for rotating the spindle and the gears for driving the plasterimpregnating roller.

Fig. 5 is a fragmentary sectional view taken as on the line 55 of Fig. 4and drawn to a larger scale.

Fig. 6 is a fragmentary cross sectional view of the device taken on theline 6-6 of Fig. 2 and drawn to alarger scale.

Fig. 7 is an enlarged fragmentary sectional view taken longitudinally ofthe shifting drum.

Fig.8 is an enlarged fragmentary sectional view of the sifting drumtaken as on the line 8-8 of Fig. 2.

Fig. 9 is a sectional view in detail illustrating one of the bandageguides.

The illustrated embodiment of my inven tion includes a case or framewhich I have indicated in its entirety at A and which is in the natureof a box or similar structure open at the top. The case A consists ofsides 10 and 11, abottom 12 and end members 13 and 14. Both of the endmembers 13 and 14 are spaced from the bottom 12 to leave openings 9 and19 (Fig. 3) in the case immedlately above the bottom 12 thereof. Theopening 19 is normally partially obstructed by a closure 16 which ishingedly connected to the end member 14 through hinges 15, said closure16 being adapted to swing upwardly to enlarge the opening 19 between theend member 14 and the bottom 12 for a purpose presently to be described.WVithin the interior of the case A and disposed between the sides 10 and11 is a supporting structure for a bandage indicated in its entirety bythe reference letter B. This supporting structure is disposed generallyhorizontally and in the operation of the device the bandage material isdrawn over the same. Said supporting structure B consists of a bed 17 atone end of the case A and an apron 18 disposed at the other end thereof.The bed 17 is constructed from sheet material of a width equal to thedistance between the sides 10 and 11 and is inserted into the case Athrough the opening 19 thereof below the closure 16. This plate restsupon two rails 20 and 21 attached to the sides 10 and 11 of case A. Saidbed 17 protrudes from the case and is formed with a depending lip 22 bymeans of which it may be readily removed from said case, said lip alsoserving the additional purpose of guiding a bandage onto the surface ofthe bed. 17. This lip also engages the ends of the rails 20 and 21 andthus provides a stop for limiting the inward movement of bed 17 alongsaid rails.

The apron 18 is constructed of canvas or other suitable flexiblematerial having a relatively rough surface and is formed at the innerend thereof with a hem 23 through which a rod 24 extends, said rod beingattached at its ends to the sides 10 and 11 of the case A immediatelybelow the bed 17. Said apron 18 constitutes a continuation of the bed17, the outer portion thereof extending freely over and being slidablysupported upon a rod 25 extending from Wall 10 to wall 11 of the case Aacross the opening 9. The outer extremity of the apron 18 is formed witha hem 26 in which is disposed a rod 27 which serves as a weight fordrawing the apron over the rod 25 and thus tensioning the apron.

At the end of the case A, adjacent the bed 17, is a reel indicated inits entirety at C. This reel includes a shaft 28, the ends 29 and 30thereof being reduced in diameter to form trunnions which are revolublysupported in two spring arms 31 and 32 attached to the sides 10 and 11of the case A by screws 33. This shaft 28 may be applied to or removedfrom the arms 31 and 32 by springing the arm 31 outwardly through themanipulation of a finger piece 34 formed upon the free end of said arm.The reel C also includes a fixed head 35 formed with a hub 135 rigidilysecured to the shaft 28 as by means of a pin 136 and further includes anadjustment head 36 which is formed with a boss 37 having a set screw 38screwed into it and engaging the shaft 28, whereby said head may beadjustably secured to the shaft at any selected position along the same.Said shaft 28 is adapted to receive a roll 39 of gauze or otherbandaging material between the heads 35 and 36, the latter beingadjusted to accord with the width of the roll.

The bandaging material to be treated is drawn from the roll 39 acrossthe bed 17 and the apron 18, the end of the material being caught upon aspindle 41 best shown in Figs. 2 and 3. This spindle is preferablyconstructed rectangular in cross section and is supported as follows:Upon the exterior of the side 11 of the case A is a plate or bar 45which is attached to said case by screws 137. Secured to this bar 45 isa bearing 44 formed with a socket 43 adapted to receive the reducedrounded end 42 of the spindle 41. The opposite end 46 of the spindle 41is also turned down, the extremity thereof being formed With an openslot 54. A second plate 47, mounted on the side 10 of the case A, issecured thereto by screws 138. Secured to this plate is a bearing 48having a bore 49 extend ing therethrough. This bore 49 revolublyreceives the inner end of a removable sleeve 50, the bore 139 of saidsleeve, in turn, receiving the shank 109 of a crank 51 having a handle52, said shank being secured to the sleeve 50 by means of a pin 140. Theinner end of the sleeve 50 receives the reduced end 46 of spindle 41 andis fitted with a pin 53- which engages in the slot 54 in the spindle end46 and forms a coupling between said sleeve and spindle. It is to benoted that the diameter of the bore 49 in bearing 48 is greater than thelargest diametrical dimension of the spindle 41 so that when the sleeve50 is removed the angular portion of the spindle may enter said bore 49sufficiently to permit of the removal of the end 42 thereof from thebearing 44 on the opposite side of the case. In this manner, when abandage has been wound on the spindle 41, spindle and bandage togethermay be removed from the case and the completed bandage roll thereafterremoved from the spindle.

The device will accommodate bandages of various widths. For guiding thebandaging material along the bed 17, 1 provide on said bed two guidesand 56. The guide 55 is rigidly secured to the bed 17, while the guide56 is adjustable transversely thereof. Said guide 56, shown in detail inFig. 9, consists of a strip of sheet metal which is bent U- shaped toprovide a flange 57 adapted to underlie the bandage material and aflange 58 adapted to overlie the same. The flange 58 is constructed witha notch 59 cut back substantiall to the portion 60 of the guide whichconnects the two flanges 57 and 58. Attached to the flange 57 oppositethe notch 59 is a pin 61 formed with a reduced end 142 which extendsinto an opening 141 and is riveted to said flange. The pin 61 passesthrough a slot 2 in the bed 17, said slot extending transversely acrossthe bed. Encircling the pin 62 beneath the bed 17 is a compression coilspring 65 which is seated between two washers 66 and 67 on said pin. Thewasher 66 bears against the underside of the bed 17, while the washer 67bears against a cotter key 68 passing through the lower end of the pin62. Bv means of t 115 construction, the guide 56 is frictionally held inposition upon the bed 17 and may he slid from one end of the slot 62 tothe other so as to accommodate any desired Width of material. For thepurpose of preventin rotation of the guide 56, the pin 61 is flattenedon opposite sides as indicated at 143, which portions of said pin fitsnugly within the slot 62. The guide 55 may be attached to the bed 17 inthe same manner as the guide 56 or it may be riveted to the bed 17. asdesired.

To maintain the fabric in contact with the face of the bed 17, a finger72 is employed, the same being connected to the bed 17 near one edgethereof by means of a hinge 73. This finger may be swung upwardly topermit of the insert-ion of the-bandage material between it and the bedand when said finger is released it acts through gravity to hold thematerial in contact with the bed.

For the purpose of depositing plaster upon the bandaging material, ahollow cylinder or drum 74 is employed. This drum includes two heads 75and 76 having flanged hubs 77 secured to a shaft 78. This shaft isjournaled in two bearings 86 and 87 secured to the sides 10 and 11 ofthe case A by means of screws 88. At their peripheries, the drum heads75 and 76 are shaped to provide annular reinforcing beads 149 (Fig. 7and also inwardly extending rim portions 7 9. Spanning the spacebetween'the rim portions '79 of the drum heads 75 and 76 are two spacedbars 85, the same being secured at'their ends to said rim portions andforming between them an opening 81. Closing this opening is an arcuatedoor or closure 82 consisting of a frame 88, supplied with a covering 84of screen wire or the like, one side bar of said frame 83 being securedto one of the bars 85 by means of hinges 145. Supplementing the closure88 and completing the peripheral portion of the drum body is a coveringof screen wire or the like, the same being secured along its sides tothe rim portions 79 of the drum heads '7 5 and 76 and along its ends tothe bars 85. A latch bar 146 is employed for releasably securing thedoor 82 closed. This latch bar has hooks 147 and 148 formed at theopposite ends thereof, the same being adapted to hook over the beads 149of the head plates 75 and 76 of the drum 74. The latch bar 146 issomewhat resilient and ma be sprung. to disengage the hook 148 from thebead 149 with which it cooperates, by manipulating a finger piece 150formed at the end of said hook. A keeper 151 attached to the head plate76 indicates to the user the proper position for application of thelatch bar to the drum and assists in preventing the latch bar frommoving peripherally on the drum. In the use of the device, the drum 74is rotated upon the revolution of the shaft 78, which causes theplaster, placed within the drum through opening 81, to be sifted throughthe coverings 80 and 82 and deposited upon the bandage supported by thebed 17 and apron 18.

The plaster, deposited upon the bandage is worked into the mesh andmaterial thereof by the roller 89 as the bandage is drawn across theapron 18. This roller 89 is rigidly mounted on a shaft 90 journaled inthe two plates 45 and 47 on sides 10 and 11 of case A, the lowermostportion of the roller being disposed below the level of the bed 17.

In conjunction with the apron 18, a presser is employed which isindicated in its entirety at 91. This presser comprises a frameconsisting of two bars 92 disposed longitudinally of the case A (Figs. 2and 3) and two cross bars 98 and 94. The bars 93 and 94 have downwardlybent ears 95 at the ends thereof which are fastened to the ends of thebars 92 by rivets 96. A shaft 97 extending through the bars 92 and thesides 10 and 11 of case A'pivotally supports the frame of the presser 91beneath the apron 18. Attached to the frame bars 93 and 94: of thepresser 91 is a flexible back 98 constructed of leather or othersuitable material. The ends of this back are secured to the bars 93 and94L and the intermediate portion thereof rides upon a rod 99 traversingthe case A and secured at its ends to the sides 10 and 11 of said case.This rod 99 is disposed immediately beneath the bed 17 and forms asupport for the back 98 which in turn supports the apron 18 along theinner end of the bed 17. A tension coil spring 100 is stretched betweenthe frame member 94 of the presser 91 and an eye 101 secured to thebottom 12 of the case A. This spring tilts the presser frame and actsthrough the back 98 and apron 18 to yieldingly press the bandage againstthe lower portion of the roller 89. The parts are so arranged that theend 102 of the presser 91 extends above the lowermost portion of roller89 so as to form an undulation in the apron 18 by reason of which thebandage is kept in close contact with said apron 18.

The roller 89 is driven from the sleeve 50 which turns the spindle -19,through a transmission device illustrated in detail in Figs. 4 and 5.Attached to the plate 47 midway between the centers of the shaft 90 andthe sleeve 50 is a stud 103, said stud being formed with a reducedportion 144: which is received in a counter-sunk hole 145 in said plateand riveted to the plate. Upon this stud is rotatably mounted an idlerpinion 104 which meshes with a gear 105 fast to the sleeve 50 and asimilar gear 106 fast to the shaft 90. The gear 105 is secured to thesleeve 50 by means of the pin 140 which projects into the hub 108 ofsaid gear and which, as previously explained, passes through the sleeve50 and the shank 109 of crank 51 in the outer end of said sleeve. Thegear 106 is secured to the shaft 90 by means of a pin 110 extendingthrough the hub 111 of said gear and j through said shaft 90. The gear104: is free to rotate upon the stud 103 but is held from axial movementthereon by a washer 112 backed by a cotter key 113 passing through saidstud. By means of this construction the roller 89 is rotated in the samedirection as the spindle ll so that said roller assists in drawing thebandage along the apron 18 as the crank 51 is rotated.

A gear guard 11 1 is employed to cover the teeth of the gears 10%, 105,and 106. This guard is constructed of sheet metal bent as be t shown inFig. 1 and formed with ears 11 Screws 116 passing through these ears andinto the side 10 of case A secure the guard 114 in place.

The sifting drum 74 is driven from the shaft 90. A sheave 117, mountedupon one end of the shaft 90 at one side of case A is secured to saidshaft by means of a pin 118. Likewise, a sheave 119, mounted upon thecorresponding end of the shaft 78 is secured thereto by a pin 120. Thesesheaves 117 and 119 are disposed in the same plane, a crossed round belt121 passing about the same to drive the sifting drum 7 4 in a directionopposite to the direction of rotation of the roller 89. When the crank51 is turned all of the moving parts of the device are simultaneouslyoperated.

In use, a roll of bandaging material is applied to the reel C, said reelbeing first freed from the arms 31 and 32 by grasping the finger piece34 on arm 31 and springing the same outwardly. The set screw 38 isloosened and the head 36 slipped from the shaft 28. The roll of materialto be used is then placed upon the shaft 28 and the head 36 replaced andthe set screw 38 tightened to hold it in proper position. The reel C isnext remounted in the arms 31 and 32. As previously indicated, themachine is capable of handling any width of material which can beaccommodated between the fixed guide 55 and the adjustable guide 56. Forthe purpose of illustration, 1 have shown in the drawing a roll 39 ofmaterial of a width considerably less than the maximum width of materialfor which the device is designed.

After the roll of material has been properly applied to the reel C, thedoor 16 is raised to give access to the interior of the case A. The endof the roll is then threaded through the opening 19 uncovered by thedoor and thence through the guide 55 on bed 17. The finger 72 is thenraised, the material being drawn beneath it and thence fed under theroll 89 which is caused to be rotated by turning crank 51 to draw thematerial along the apron 18. The end of the bandage material is thenturned about the square spindle 411. Due to the shape of this spindlethe material is satisfactorily caught thereon without the use of specialattaching means. With the roll 122 started upon the spindle 41, the run123 of the bandage is drawn along the upper surface of the bed 17 andthe apron 18 as the crank 51 is turned. After the bandage has beenattached to the spindle 4L1, the adjustable guide 56 is brought intoproper position, as clearly shown in Fig. 2. The door 16 is then closedand the run 123 of the bandage material is ready to receive the plasterof Paris.

For the purpose of controlling the lateral extent of the plasterdischarged from the drum 71, I empioy blanking bands of differentwidths, one thereof being shown at 124. The selected band is inserted inthe drum 74: at the end thereof opposite the side of the machine onwhich the run 123 of the 'r bandage is disposed. This band 124; is ofsuch width that the plaster when sifted from said drum will fall onlyupon the run 123 of the bandage, said band being constructed of sheetmaterial, preferably of a resilient bands may be used in conjunctionwith one another and arranged in proper aXial relation to give thedesired blanking effect.

'A suitable quantity of plaster is introduced into the interior of thedrum 7 4 through the opening 81 therein and theclosure 82 is swung shutand latched in place by the latch member 146. The machine is thenoperated by turning the crank 51 in a counter-clockwise direction asviewed in Fig. 4. Thus, the roller 89 and drum 74 are rotated and thebandage is wound upon the spindle 41 from the bottom thereof. As theoperation proceeds,

the plaster within the drum 74 is sifted through the covering of screenand is deposited upon the run 123 of the bandage. As the bandage passesbetween the apron 18 and the roll 89, the plaster is pressed into themeshes of the bandage material. Duet-o constructing the apron 18 ofcanvas, it has a suiiiciently rough surface so that the plaster isprevented from sliding freely along the same. This causes the materialto travel through the layer of plaster on the apron and further assistsin rubbing and working the plaster into the bandage. Due to theconstruction and action of the presser 91, the run 123 of the bandage ismaintained in intimate contact with the apron 18.

Due to its particular mounting, the apron 18 is self-conformable to theroll of the completed bandage as it accumulates upon the thereof beneaththe roll, performs the final rubbing or pressing of the plaster into thematerial. It further tends to keep the plaster from becoming dislodgedfrom the material in the roll and serves to reapply it should it becomedislodged. In this manner, a mar;- imum amount of plaster is imbedded inthe bandage, whereby it may be expected to function in the mostefficient manner. As the roll 122 increases in diameter .(dotted linesat 127 in Fig. 3), the free end of the apron 18 is drawn back over therod 25 to occupy the position such as shown in dotted lines at 128 inFig. 3. The weight 27 maintains the apron 18 taut so that it is alwaysin the proper position to function and produce the desired results.

After the roll 122 is completed, the sleeve is withdrawn from thebearing 48, thus disengaging the pin 53 from the open ended slot 54 inthe spindle 41. Then, by sliding the spindle 41 into the bore 49 of thebearing 48, the end 42 of said spindle becomes di engaged from theopposite bearing 44. The spindle 41 may thereafter be bodily removedfrom the device and the roll 122, in turn, removed from the spindle.Thereafter, the spindle may be reapplied to the machine for future use.

In order that the interior of the device may be kept clean and to permitof the removal of any plaster which may sift down upon the bottom 12,the rods 24 and 99 and the shaft 97 are all removable so that the apronl8 and the presser 91 may be detached and removed from the case A. Andthe bed 17 is slidably mounted on the rails 20 and 21 so that it may beremoved from the end of the case through 'the opening 19. In thismanner, the removable parts may be readily cleaned, inspected andrepaired, as the occasion demands, and the interior of the case A alsomay be readily cleaned.

My invention is highly advantageous in that a simple and efficientdevice is provided, whereby plaster may be readily and effectivelyapplied to bandages. The application of the plaster to the bandage isaccomplished automatically. The device operates economically avoiding inlarge degree the waste of material. The device is so encased as toretain the plaster within the same, thereby keeping the surroundingworking space free from unsightly accumulations. is adjustable toaccommodate bandages of different widths. All of the parts are easilyaccessible and a number thereof readily re- .movable for inspection orrepair or for the purpose of facilitating the cleansing of parts. Thedevice can be constructed at a nominal cost and will not readily get outof order.

Changes in the specific form of my invention as herein described may bemade within the scope of what is claimed without departing from thespiritof the invention.

Having described my invention what I claim as new and desire, to protectby Letters Patent is:

1. A device for applyingplaster to bandages comprising a substantiallyhorizontal supporting apron, means for drawing a bandage over saidapron, means superimposing said apron for depositing plaster upon thebandage supported thereby, a roller contacting with the plaster treatedsurface of said bandage and adapted to press the plaster into saidbandage, a pivoted frame for said apron, and means for yieldinglytilting said frame to press the bandage against the roller through theintermediary of said apron.

2. A device for applying plaster. to bandages comprising an aprondisposed substantially horizontally, means for drawing a bandage oversaid apron, means superimposing said apron for depositing plaster uponthe bandage supported thereby, a roller contacting with the treatedsurface of said bandage for workingthe plaster into the same, a movableframe for-said apron, and means for moving said frame to elevate theapron, and throughit, press the bandage against said roller. 7

8. A device for applying plaster to bandages comprising a support, meansfor drawing a bandage over said support, a sifting The device a spindle.

drum superimposing said support and havlng a perforate wall for siftingplaster upon said bandage, and a blanking band disposed within said drumand adapted to lap a portion of said wall for limiting the area of thesurface over which the plaster is sifted.

at. A device for applying plaster to bandages comprising a supportforming a substantially horizontal supporting surface, a reel disposednear one end of said surface for carrying the supply of bandage to betreated, a spindle superimposing and disposed near the other end of saidsurface for drawing the bandage over said surface and winding it in aroll, means for depositing plaster upon the bandage during its travelover said surface, said surface contacting with said bandage, a portionthereof being movable to conform with the increasing diameter of theroll of bandage accumulating upon said spindle.

A device for applying plas'er to bandages comprising an apron, means fordrawing aibandage along said apron and in contact therewith, said meansincluding a spindle disposed above the apron and adapted to wind thebandage thereon, means for depositing plaster upon the bandage in itstravel along the apron, said apron being yieldable to the roll ofbandage accumulating on said spindle.

6. A device for applying plaster to bandages comprising a frame, anapron attached at one end to said frame, a spindle mounted in said frameand superimposing said apron, said spindle being adapted to draw abandage across said apron and wind the same up in a roll thereon, meansfor depositing plaster upon the bandage, a roller mounted in said frameengaging said bandage for working the plaster into the bandage,supporting means for said apron disposed therebeneath and between saidroller and spindle, and other supporting means for said apron, the samebeing disposed at the side of said spindle opposite said roller andabove the lowermost portion of the spindle, said last mentioned meansbeing adapted to slidably support said apron, and means for tensioningthe apron over said last supporting means, said apron being adapt-ed toconform itself to the lower portion of the roll accumulating on said 7.A device for applying plaster to bandages comprising a frame, ayieldinglyten sioned apron therein, a spindle detachably mounted in saidframe and superimposing said apron, said spindle being adapted to draw abandage along said apron in contact therewith and to wind the bandage ina roll thereon, means for depositing plaster upon the bandage, means forworking the plaster into the bandage, and supporting means for 'theapron disposed at either side of said spindle and at elevationsapproximating that of said spindle.

8. 'A device for applying plaster to bandages comprising a frame, ayieldingly tensioned apron therein, a spindle mounted in the frame andsuperimposing said apron, said spindle being adapted to draw a bandagealong said apron in contact therewith and to wind the bandage in a rollthereon, means for sifting plaster into the meshes of the travelingbandage, and supporting means for said apron disposed at either side ofthe spindle and at elevations approximating that of said spindle, saidapron being self-conformable to the lower portion of the roll of bandageaccumulating on the spindle and forming a pocketing means for catchingthe plaster dislodged from the roll and for reapplying the dislodgedplaster to the roll.

9. A device for applying plaster to bandages comprising a frame, ayieldingly tenioned apron therein, means for drawing a bandage over theapron, means for depositing plaster upon the moving bandage, a devicefor en gaging the plaster covered surface of the bandage to work theplaster into the bandage, and means for mounting the apron in saidframe, said means cooperating with said device to form an undulation inthe apron dipping beneath said device.

10. A device for applying plaster to bandages comprising a frame, aspindle upon which a bandage is adapted to be wound in roll, means fordepositing plaster upon the bandage prior to its entry to the roll, adevice in advance of the spindle for working the plaster into thebandage, a support for the bandage consisting of a tensioned yieldingapron, and means for mounting said apron to provide undulations thereinoccupied in one trough by said device and in another thereof by the rollaccumulating on said spindle.

11. A device for applying plaster to bandages comprising a frame, aspindle mounted in the frame and adapted to wind a bandage in a rollthereon, means for depositing plaster upon the bandage prior to itsentry to the roll, and an apron superimposed by the spindle andyieldingly tensioned against the accumulating roll thereon in conformitywith the lower portion of said roll.

in testimony whereof I my signature.

FERDINAND BUCHSTEIN.

